Question 1

The greater the concentration of a solution,the greater the

Accepted Answer

A)  osmotic pressure of the solution.
B)  rate of facilitated diffusion.
C)  tendency for water to diffuse from the solution.
D)  number of carrier molecules present.
E)  amount of solvent.F) A) and B)
G) A) and C)

Question 2

-What structure does "A" represent on the diagram of the plasma membrane?

Accepted Answer

A)  phospholipid bilayer
B)  internal membrane surface
C)  integral protein
D)  peripheral protein
E)  membrane channel proteinF) C) and E)
G) B) and E)

Question 3

Which of the following events occurs during anaphase?

Accepted Answer

A)  The nuclear envelope degenerates.
B)  Chromosomes migrate to opposite poles of the cell.
C)  Chromatin strands condense to form chromosomes.
D)  Cytokinesis completes.
E)  Spindle fibers are formed.F) A) and B)
G) A) and C)

Question 4

What is the only human cell with a flagellum?

Accepted Answer

A)  red blood cells
B)  macrophage (large,mobile white blood cell) 
C)  spermatozoa
D)  columnar cells of small intestines
E)  columnar cells of upper respiratory tractF) C) and D)
G) A) and E)

Question 5

-The cell is the basic unit of life.All cellular structures exhibit special functions.Match the structure with its function.What is the function of "B"?

Accepted Answer

A)  major site of ATP synthesis when oxygen is available
B)  contains digestive enzymes
C)  site of protein synthesis
D)  directs cellular activities,contains DNA
E)  outer boundary of cell,controls entry and exit of substancesF) None of the above
G) B) and D)

Question 6

Salt was added to a beaker of distilled water (the water was not stirred) .A sample taken from the bottom of the beaker was found to be 20% salt.At the same time,a sample taken from the top of the beaker was found to be 2% salt.After 24 hours

Accepted Answer

A)  the difference in the percentage of salt between the top and bottom samples would increase.
B)  the percentage of salt in top and bottom samples would be approximately equal.
C)  the samples would still be 2% and 20% respectively.
D)  the salt would float to the top.
E)  None of these choices are correct.F) D) and E)
G) B) and C)

Question 7

A cell that breaks down and recycles proteins would have large numbers of

Accepted Answer

A)  peroxisomes.
B)  secretory vesicles.
C)  proteosomes.
D)  lysosomes.
E)  rough ER.F) A) and B)
G) D) and E)

Question 8

The nucleus of a cell functions to

Accepted Answer

A)  control and coordinate cellular activities.
B)  produce ATP.
C)  digest lipids.
D)  synthesize proteins.
E)  produce secretory vesicles.F) A) and D)
G) C) and D)

Question 9

Cells of the small intestine and kidney tubules have extensions that increase their surface area called

Accepted Answer

A)  cilia.
B)  hairs.
C)  flagella.
D)  microvilli.
E)  ruguae.F) None of the above
G) A) and E)

Question 10

The movement of water through a selectively permeable membrane is called

Accepted Answer

A)  facilitated diffusion.
B)  active transport.
C)  diffusion.
D)  osmosis.
E)  endocytosis.F) A) and E)
G) A) and D)

Question 11

What type of cell has abundant mitochondria?

Accepted Answer

A)  fibroblast (makes protein fibers) 
B)  liver cells that detoxify hydrogen peroxide
C)  white blood cell,a phagocyte
D)  mucus cell (secretes mucus) 
E)  cardiac muscle cells (require large amounts of ATP) F) B) and C)
G) All of the above

Question 12

The predominant lipid in the cell membrane is a

Accepted Answer

A)  triglyceride.
B)  glycolipid.
C)  phospholipid.
D)  prostaglandin.
E)  cholesterol.F) B) and D)
G) A) and D)

Question 13

Microvilli

Accepted Answer

A)  are supported by microtubules.
B)  move the cell.
C)  increase the surface area of the cell.
D)  are extensions of the lysosomal membrane.
E)  function to make the cell mobile.F) C) and E)
G) B) and D)

Question 14

The shaft of a flagellum contains _____________ microtubule doublets around its periphery.

Accepted Answer

A)  9
B)  2 + 9
C)  2+7
D)  7
E)  2F) A) and E)
G) A) and D)

Question 15

A toxic drug destroyed the Golgi apparatus.This would affect

Accepted Answer

A)  packaging of glycoproteins and lipoproteins.
B)  energy production.
C)  microtubule production.
D)  intracellular digestion.
E)  ribosomal RNA synthesis.F) A) and B)
G) C) and D)

Question 16

Active transport

Accepted Answer

A)  requires ATP.
B)  involves vesicle formation.
C)  does not require metabolic energy (ATP) .
D)  can move substances along their concentration gradient.
E)  follows osmotic pressure gradients.F) A) and C)
G) A) and D)

Question 17

White blood cells digest other cells and so would be expected to

Accepted Answer

A)  have mitochondria to energize them.
B)  have large numbers of lysosomes.
C)  possess cilia on their surfaces so they can move quickly.
D)  expel their nuclei to make room for all of the cells they eat.
E)  excrete excess salt as a result of all this eating.F) A) and E)
G) None of the above

Question 18

What type of cell would have an abundance of peroxisomes?

Accepted Answer

A)  mucus cell (secretes mucus) 
B)  cardiac muscle cells (require large amounts of ATP) 
C)  white blood cell,a phagocyte
D)  fibroblast (makes protein fibers) 
E)  liver cells that detoxify hydrogen peroxideF) A) and C)
G) A) and B)

Question 19

What term dealing with cancer means "not inclined to spread or become worse'?

Accepted Answer

A)  carcinoma
B)  sarcoma
C)  benign
D)  metastasis
E)  malignantF) C) and D)
G) A) and D)

Question 20

In DNA replication,

Accepted Answer

A)  new nucleotides are added at the 5' end of the growing DNA strand.
B)  only introns are replicated.
C)  DNA polymerase splices the short segments of the lagging strand together.
D)  the two existing strands are not used as templates.
E)  the leading strand is formed as a continuous strand.F) A) and E)
G) A) and D)

Exam 3: Cell Biology

Microvilli

Correct AnswerverifiedShow Answer

What is the only human cell with a flagellum?

Correct AnswerverifiedShow Answer

What type of cell has abundant mitochondria?

Correct AnswerverifiedShow Answer

-What structure does "A" represent on the diagram of the plasma membrane?

Correct AnswerverifiedShow Answer

Cells of the small intestine and kidney tubules have extensions that increase their surface area called

Correct AnswerverifiedShow Answer

White blood cells digest other cells and so would be expected to

Correct AnswerverifiedShow Answer

The shaft of a flagellum contains _____________ microtubule doublets around its periphery.

Correct AnswerverifiedShow Answer

-The cell is the basic unit of life.All cellular structures exhibit special functions.Match the structure with its function.What is the function of "B"?

Correct AnswerverifiedShow Answer

The predominant lipid in the cell membrane is a

Correct AnswerverifiedShow Answer

In DNA replication,

Correct AnswerverifiedShow Answer

Salt was added to a beaker of distilled water (the water was not stirred) .A sample taken from the bottom of the beaker was found to be 20% salt.At the same time,a sample taken from the top of the beaker was found to be 2% salt.After 24 hours

Correct AnswerverifiedShow Answer

The nucleus of a cell functions to

Correct AnswerverifiedShow Answer

A toxic drug destroyed the Golgi apparatus.This would affect

Correct AnswerverifiedShow Answer

Which of the following events occurs during anaphase?

Correct AnswerverifiedShow Answer

What type of cell would have an abundance of peroxisomes?

Correct AnswerverifiedShow Answer

A cell that breaks down and recycles proteins would have large numbers of

Correct AnswerverifiedShow Answer

Active transport

Correct AnswerverifiedShow Answer

What term dealing with cancer means "not inclined to spread or become worse'?

Correct AnswerverifiedShow Answer

The greater the concentration of a solution,the greater the

Correct AnswerverifiedShow Answer

The movement of water through a selectively permeable membrane is called

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified